Kettle



FIG. 1 is a top front perspective view of a kettle showing my new design;

FIG. 2 is a side elevation thereof;

FIG. 3 is a front elevation thereof;

FIG. 4 is a rear elevation thereof; and

FIG. 5 is a top plan view thereof.

The bottom of the kettle is flat. 

The ornamental design for a kettle, as shown and described. 